The Government Digital Service has made multiple user number targets, but it hasn't met any of them. Earlier this year, the GDS claimed the figure would be around 700,000 sign-ups, of which less than half materialised.

One of the scheme's major failings is its lack of recognition for businesses and third-party agents, such as accountants or farmers. According to The Register, those who receive a marriage tax allowance have also fallen foul of the system's flaws.

The GDS is aiming for between 470,000 and 700,000 users by April next year, helped along by a rise in successful sign-ups from 40% to 69%.